Oscillating fan



H. R. STUART OSCILLATING FAN" 7 July 10, 1928. 1,676,467

Filed Feb. 10. 1926 2 Sheets-Sh0't 1 INI EN TOK By K Kl TTORNE V5.

July 10, 1928.

R. STUART QscILpATING- FAN Filed Feb. 10. 1926 2 Sheets-$59M 2 20 v zz 15 I [Z I M17 f; j 15 14 J 9 10 f Q 6 ll 7 10 10 25 I .24 0' 28 l 88 a5 a2 V 4 Z I A T T ORNE ya Patented July 10, 1928. v

UNITED STATES PATENT v orelc E.-

HABVE R. s'runnrr, or SPRINGFIELD, 01110, ASSIGNOR TO THE nonnnvs arviYnn s' coin- PANY, or SPRING IELD. OHIO, A CORPORATION or 01110.

OSGILLATING FAN.

Application filed February This invention relates to improvements in oscillating fans for ventilating purposes, it more particularly relating to means for disconnecting the fan from the oscillating devices and holding the fan stationary so far as oscillatory movement is concerned.

The invention has to do with that type of oscillatory fan in which themotor and fan are mounted for swivelling movement and the devices which oscillate the fan are operated from the motor shaft.

The object of the invention is to provide simple and effective means for disconnecting the oscillating devices byan arrangement whereby the devices; may be disconnected or again connected while the fan is in motion and also to provide an arrangement whereby the fan may be held rigidly in stationary position so far as swivelling is concerned without the necessity of providing set screws or other positive holding devices of that character.

In the accompanying drawings:

Fig. 1 is an elevation of an oscillating fan embodying the improvements, Fig. 2'is a section on the'line 2-2 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 2.

Fig. 4- is a section on the line 4-4 of Fig. 2.

Fig. 5 is a perspective view of the clutch. Fig. 6 is a rear elevation of the parts shown in Fig. 1 with the casing sectioned.

Referring to the drawings, 1 represents a supporting standard to which is pivotally connected a head 2, the connection being made through a bolt 3 having a thumb nut 4 in the usual way to permit the head and fan carried thereby to be tilted. The motor I 5 has a trunnion 6 which is swivelled in the head 2 and on the forward end of the motor shaft 6 is mounted the hub 7 of a fan of usual form. The rear end of the motor shaft 6 has a worm 7 which drives the worm wheel 8, the worm wheel S being loosely mounted upon a shaft 9, the lower enlarged end of which is journaled in the support 10 which is integrally connected with and carried by bracket arms supported from the motor frame. These bracket arriis have a bearing for the rear end of the'motor shaft and also have an upwardly projecting sup- 10, 1926. Serial No. 87.402.

port 12 to the upper end of which "an angle plate 13.

is secured Fixed to a reduced portion of the shaft 9 I is a collar 14 having a'flange 15. This flange 15 has a notch 15 and the hub of the V gear Sis provided with a pair of notches 8, Loosely mounted on the upper reduced por tion of the shaft 9 is a disk 17 having a tooth 17 and also having attached thereto a yoke 19, the upper end of which has in turn connected therewith a pin 20 having a knurled linger piece21. The pin 20 projects through an opening in the guide plate 13 and also throughan opening in the casing 22 with the knurled finger piece 21 on the. outside of the casing. A coil' spring 18 is interposed betweenthe disk 17 and a pin in the upper end of the shaft 9.

The lower end of the shaft 9 hasattached thereto a crank arm 23 provided with an eccentric pin 24 upon -which is loosely mounted a pinion 25. The support 10 has downturned side flanges 10 to' which is secured by screws 26 aU-shaped supporting piece 27. Between the flanges'of the piece i 27 and the-flanges 10" is clampeda stationary internal gear 28 concentric with the shaft 9. Mounted in" the supporting piece 27 is a shaft 29 the upper end of which has formed therewith an annular cup-shaped member 30 which carries an internal gear 32 concentric with the stationary internal gear 28. The gear 32 has a greater number of teeth than the gear 28 in the present arrangement the gear 28 'being'provided with sixteen teeth and the gear 32 with seventeen teeth. The 1 pinion overlaps these gears and is in mesh therewith. The lower end of theshaft 9 has notch 15 in the disk 15 and oneof the notches 8 in the worm wheel 8 so that rotary movement of the wheel 8 will be imparted to the shaft 9. As the pinion 25 moves about the teeth of the gears 28 and 32 the gear 32 will be slowly rotated. in a well known Way, the degree of rotation in the particular arrangement shown being av distance of one tooth of the gear32 to one 17 a slight turn relatively to the disk 15 the tooth 17 may be brought to rest upon the disk 15 and thus hold the parts disengaged' When thus disengaged the motor and fan will be locked in their stationary position so far as oscillation is concerned by thespeed reducing gearing because any oscillatory movement of the parts would have the effect of, rotating thegear 82 which is locked from rotation by the' stationary gear 28 through the medium. of the pinion 25.

To agai-n-.-disengage the-parts it is neces saryeonly to give'the disk 17 a slight turn to bringyits tooth 17 in registry with the notch 15"" after =Wl1lCl1 the engagement of the tooth withone of the notches 8 will beautomatic: I

Having thus described my invention I claim:

1. In an oscillatingmechanism for a motor and' fani mounted to oscillate, the combination of a motor shaft, a drivenshafthaving a crank pin, a pinion mountedupon said pin, .a-stationary internal gear and a rotatable internal gear concentric with said driven shaft and in--mesh-with said pinion, said gears and p nions constituting speed reducmg meohan1sm, manualmeans for connecting and disconnecting said-driven shaft with and from said=motorshaft, a crank connected with said rotatable gear; and a link-pivotally connecting said crank with a stationary part, said motor: and fan being; locked against movement by said speed reducing gearing excepting when said gearing is connected With said motor shaft.

2. In an oscillating mechanism, a motor and fan mounted to oscillate, a driven shaft operatively connected with said motor, a revoluble pinion eccentrically connected with said shaft, a stationary gear and a rotatable gear concentric with said shaft and in mesh with said pinion, said gear and pinion oonvstituting speed reducing mechanism, manual means for connecting and disconnecting said driven shaft with and from said motor shaft, a'crank connected Withsaid rotatable gear, and a pivotal connectionbetweensaid crank and a stationary part, said motor and fan being locked against movement by said speed reducing gearing excepting Whensaidgearing is connected with said motor shaft. 3. In anoscillating mechanism, a motor and fan mounted to os,cillate,a driven shaft operatively connected With said motor; a rotatable pinion eccentrically mounted at an end of said driven shaft, a stationary internal gear and a rotatable internal gear meshed with said pinion, said gears having different numbers of teeth, manual means for connecting and disconnecting: said drivenz shaft With and from said. motor shaft, a crank connectedwith said rotatable gear, and a pivotal connection between said. crank and a stationary part, said motorbeing locked against movement by said gearing excepting when said gearing, is connected with said motor shaft v i In testimony whereof, I have hereunto set my hand this 5th day of February, 1926.

HARVE R. STUART.- 

